I use an old cheap 3 wheel one my brother bought in the early 80s. It held the 454 out of his blow boat, but I did turn it over. It's had several big blocks and small blocks on it over the years. Before I started this engine I cut the three casters off and added an 18" piece of tube across the end of the leg that had the single wheel. Then welded four new casters on, it's a ton more stable now. It's still a cheap stand though.

A couple years ago I missed a deal on one with the gear box that rotates the engine. I still kick my self in the pants for that.